CN114405078B - Multistage rotational flow particle suspended matter discharge device and process thereof - Google Patents
Multistage rotational flow particle suspended matter discharge device and process thereof Download PDFInfo
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- CN114405078B CN114405078B CN202210015447.0A CN202210015447A CN114405078B CN 114405078 B CN114405078 B CN 114405078B CN 202210015447 A CN202210015447 A CN 202210015447A CN 114405078 B CN114405078 B CN 114405078B
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- cyclone
- slag
- particle suspended
- suspended matters
- slag collecting
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- 239000002245 particle Substances 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000008569 process Effects 0.000 title claims abstract description 17
- 239000002893 slag Substances 0.000 claims abstract description 84
- 238000007599 discharging Methods 0.000 claims abstract description 48
- 238000004062 sedimentation Methods 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 19
- 239000000725 suspension Substances 0.000 claims description 22
- 238000002955 isolation Methods 0.000 claims description 20
- 239000010865 sewage Substances 0.000 claims description 19
- 230000000903 blocking effect Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 239000002351 wastewater Substances 0.000 abstract description 2
- 239000011435 rock Substances 0.000 description 9
- 238000001914 filtration Methods 0.000 description 6
- 239000004576 sand Substances 0.000 description 4
- 239000011148 porous material Substances 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/26—Separation of sediment aided by centrifugal force or centripetal force
- B01D21/267—Separation of sediment aided by centrifugal force or centripetal force by using a cyclone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/24—Feed or discharge mechanisms for settling tanks
- B01D21/245—Discharge mechanisms for the sediments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/26—Separation of sediment aided by centrifugal force or centripetal force
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/04—Combinations of filters with settling tanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/04—Combinations of filters with settling tanks
- B01D36/045—Combination of filters with centrifugal separation devices
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
- Cyclones (AREA)
Abstract
The invention provides a multistage rotational flow particle suspended matter discharge device and a process thereof, which relate to the technical field of water supply and drainage and environmental protection application, and adopts the following scheme: the device comprises a plurality of S-shaped cyclone sedimentation channels which are arranged continuously, wherein each S-shaped cyclone sedimentation channel is provided with two folding points, namely an upstream folding point and a downstream folding point, the folding points are provided with cyclone slag collecting grooves, the communicating parts of the folding points and the cyclone slag collecting grooves are provided with dense porous isolating plates, and an automatic slag discharging device is arranged in each cyclone slag collecting groove. The content of the suspended particles in the wastewater drainage process can be reduced, and the effect of effectively improving the water quality by automatically collecting the suspended particles in the water is achieved.
Description
Technical Field
The invention relates to the technical field of water supply and drainage and environmental protection application, in particular to a multistage cyclone particle suspended matter discharge device and a process thereof.
Background
At present, the river channel has large water intake, and main pollutants in water are particle Suspended Solids (SS) and the like. According to environmental protection regulations, enterprises need to build a multi-stage sedimentation tank and a filter tank, and a buffer water tank is also needed to accommodate accident water. However, in the use process of the ground multistage sedimentation tank, the following problems often occur: (1) Most sedimentation treatment facilities have no automatic sludge discharge device, the existing sludge discharge device has poor slag discharge effect, particles are deposited at the bottom of a sedimentation tank, and the effective volume is gradually reduced; (2) The pool bottom is manually excavated every year, the labor intensity is high, the operation is limited space, and the safety risk is high; (3) In the process of manually dredging the bottom of the pool, dredging the sediment to cause large water quality fluctuation, and easily causing environmental events such as water exceeding discharge and the like due to higher impact load on subsequent water treatment facilities; (4) The high content of long-term particulate matters in the discharged sewage causes serious abrasion of a drainage pipeline and a water pump, and the replacement frequency is increased; (5) The problem of sedimentation tank siltation particulate matter seriously affects the effectiveness of the reduction.
Therefore, aiming at the problem of high particle-containing suspended matters in the use process of the prior multistage sedimentation tank and filtering tank, the device for discharging the particle-containing suspended matters by multistage S-shaped rotational flow and the process thereof are innovatively provided, which are the problems to be solved urgently.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a multistage cyclone particle suspended matter discharge device and a multistage cyclone particle suspended matter discharge process, so that the content of particle suspended matters in the wastewater discharge process is reduced, and the effect of effectively improving the water quality by automatically collecting the particle suspended matters in water is achieved.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a multistage whirl arranges granule suspended solid device, includes the S-shaped whirl sedimentation canal that a plurality of set up in succession, S-shaped whirl sedimentation canal has two place refraction points, is upstream refraction point and low reaches refraction point respectively, and baffling point department is provided with whirl collection slag groove, and baffling point and whirl collection slag groove' S intercommunication position is provided with intensive porous division board, install automatic sediment device in the whirl collection slag groove. The device comprises a plurality of S-shaped cyclone sedimentation channels, a plurality of cyclone particle suspension discharging devices, a plurality of S-shaped cyclone sedimentation channels, two folding points are formed at the folding parts (corners), when sewage passes through the upstream folding points, partial particle suspensions such as residual rock gravel and silt are gradually impacted and decelerated at the tail ends of the cyclone slag collecting grooves and deposited at the bottoms, the partial particle suspensions such as the rock gravel and the silt are gradually deposited towards the bottoms of the tail ends of the folding points, a dense porous isolation plate is arranged at the device for preventing the particle suspensions from being washed away along with the water flow, through the links, the particle suspensions in the sewage are relatively reduced, the sewage is continuously left to the downstream folding points, the partial particle suspensions such as residual rock gravel and silt are gradually impacted and decelerated at the bottoms of the cyclone slag collecting grooves, and are gradually increased to a certain quantity and height, the automatic slag discharging device quantitatively discharges the deposited particle suspensions, and the particle suspension discharging devices with different stages are arranged according to the quantity of the particle suspensions contained in the cyclone slag collecting grooves, and the particle suspensions are more in the multistage sewage, so that the cyclone particle suspension discharging device is arranged into the S-shaped cyclone particle suspension.
Further, the automatic slag discharging device comprises a sensor, a slag discharging pipe and a power device, wherein the sensor is arranged on the rotational flow slag collecting groove, the slag discharging pipe is connected to the rotational flow slag collecting groove, the slag discharging pipe is communicated with the rotational flow slag collecting groove, the power device is arranged on the slag discharging pipe, and the power device is an automatic slag discharging pump. When the particle suspended matters accumulated in the cyclone slag collecting groove are gradually increased to a certain quantity and height, the sensor transmits signals to the automatic slag discharging pump, the automatic slag discharging pump starts to work, the particle suspended matters deposited at the position are quantitatively discharged through the slag discharging pipe, and the automatic slag discharging pump stops working after the discharge. Furthermore, the slag discharging pipe is connected to the bottom of the rotational flow slag collecting groove, so that the slag discharging effect is better achieved.
Further, the dense porous partition plates are arranged obliquely or have inclined portions thereon. The device can be set to be in compliance with the water flow direction pattern, so that the impact on the dense porous isolation plate is reduced, and the service life is prolonged.
Further, the dense porous isolating plate is provided with a plurality of holes, and the hole diameter of the holes on the dense porous isolating plate at the upstream baffling point is larger than that of the holes on the dense porous isolating plate at the downstream baffling point. The pore diameter of the filter from the upstream to the downstream is gradually reduced, and the filter from large-particle suspended matters to small-particle suspended matters is realized at one stage and one stage, so that the realization of multistage filtration is facilitated.
Further, the filter tank is also included, and the S-shaped cyclone sedimentation channel positioned at the downstream is communicated with the filter tank. Finally, the mixture is filtered in a filter tank.
In addition, the invention also provides a multistage cyclone particle suspension discharging process, which comprises the multistage cyclone particle suspension discharging device and further comprises the following steps:
a1: the particle suspended matters in the water body are naturally precipitated in the river channel, and the large particle suspended matters are precipitated; however, other particle suspended matters enter the multi-stage cyclone particle suspended matter discharge device along with the water body and flow through the S-shaped cyclone sedimentation channel;
a2: when sewage (namely water body containing particle suspended matters such as impurity rock gravel, silt and the like) flows through the S-shaped cyclone sedimentation channel, the sewage firstly passes through an upstream baffling point, and a dense porous isolation plate at the upstream baffling point performs a blocking effect to gradually deposit part of the particle suspended matters such as the rock gravel, the silt and the like to the bottom of the tail end of the baffling point, and the particle suspended matters are deposited into a cyclone slag collecting groove at the upstream baffling point;
a3: after the step A2, the particle suspended matters in the sewage are relatively reduced, the sewage is continuously left to a downstream baffling point, and a dense porous isolation plate at the point performs blocking action to gradually reduce the impact speed of partial particle suspended matters such as residual rock gravel, mud sand and the like at the tail end of a rotational flow slag collecting groove at the point and deposit the partial particle suspended matters at the bottom;
when the particle suspended matters in the cyclone slag collecting groove are gradually increased to a certain quantity and height, the sensor transmits signals to the automatic slag discharging pump, and the automatic slag discharging pump starts to work to quantitatively discharge the particle suspended matters deposited in the cyclone slag collecting groove.
From the above technical scheme, the invention has the following advantages:
1. the multistage sedimentation tank with large investment and large occupied area is eliminated, and a multistage S-shaped cyclone particle suspension discharging process is innovatively provided, so that the construction period is short, the investment is saved, and the operation is simple; 2. the matched device realizes a multistage S-shaped rotational flow sand discharge process, and different stages can be set according to the quantity of suspended matters of particles in the sewage; 3. the multistage S-shaped rotational flow is used for discharging sand, so that particle suspended matters in sewage are basically removed, the water quality is improved, and the pipeline abrasion is reduced; 4. the installation transformation is convenient, reduces drainage cost, prolongs the cleaning and replacement period of a drainage pipeline, improves water treatment efficiency, reduces the labor intensity of dredging sludge of workers, realizes intelligent environment-friendly high-efficiency drainage, and improves safety.
Drawings
In order to more clearly illustrate the technical solutions of the present invention, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural view of an S-shaped cyclone settling channel in an embodiment of the present invention.
Fig. 3 is a cross-sectional view of a-B of fig. 2.
Fig. 4 is a schematic structural view of a cyclone slag collecting tank in an embodiment of the invention.
In the figure, 1, S-shaped cyclone sedimentation channel, 2, filtering tank, 3, cyclone slag collecting tank, 4, dense porous isolation plate, 5, sensor, 6, slag discharging pipe, 7 and power device.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions of the present invention will be clearly and completely described below with reference to the drawings in this specific embodiment, and it is apparent that the embodiments described below are only some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, based on the embodiments in this patent, which would be within the purview of one of ordinary skill in the art without the particular effort to make the invention are intended to be within the scope of the patent protection.
Description of the preferred embodiments 1
As shown in fig. 1 to 4, the present embodiment provides a multi-stage cyclone particle suspended matter discharge device, which comprises a plurality of S-shaped cyclone sedimentation channels 1 and a filter tank 2, wherein the S-shaped cyclone sedimentation channels 1 positioned at the downstream are communicated with the filter tank 2; the S-shaped cyclone sedimentation channel 1 is provided with two folding points, namely an upstream folding point and a downstream folding point, a cyclone slag collecting tank 3 is arranged at the folding point, a dense porous isolation plate 4 is arranged at the communicating part of the folding point and the cyclone slag collecting tank 3, an automatic slag discharging device is arranged in the cyclone slag collecting tank 3, the automatic slag discharging device comprises a sensor 5, a slag discharging pipe 6 and a power device 7, the sensor 5 is arranged on the cyclone slag collecting tank 3, the slag discharging pipe 6 is connected to the cyclone slag collecting tank 3, the slag discharging pipe 6 is communicated with the cyclone slag collecting tank 3, the power device 7 is arranged on the slag discharging pipe 6, in the scheme, the power device 7 is preferably an automatic slag discharging pump, when particle suspended matters accumulated in the cyclone slag collecting tank 3 are gradually increased to a certain quantity and height, the sensor 5 conducts signals to the automatic slag discharging pump, the automatic slag discharging pump starts to work, the particle suspended matters deposited in the place are quantitatively discharged through the slag discharging pipe 6, and the automatic slag discharging pump stops working after the discharge. Wherein, the slag discharging pipe 6 is connected to the bottom of the rotational flow slag collecting groove 3 so as to achieve the effect of more facilitating slag discharging. In some embodiments, the dense porous isolation plates 4 are arranged obliquely or the dense porous isolation plates 4 are provided with inclined parts, so that the dense porous isolation plates can be set to conform to the water flow direction pattern, the impact on the dense porous isolation plates 4 is reduced, and the service life is prolonged. The dense porous isolation plate 4 is provided with a plurality of holes, the pore diameter of the holes on the dense porous isolation plate 4 at the upstream baffling point is larger than that of the holes on the dense porous isolation plate 4 at the downstream baffling point, the pore diameter of the holes for filtering from upstream to downstream is gradually reduced, the filtration from large particle suspended matters to small particle suspended matters is realized at one stage, and the realization of multi-stage filtration is further facilitated.
Description of the preferred embodiments 2
The present embodiment provides a multistage cyclone particle suspension discharging process, including the multistage cyclone particle suspension discharging device in embodiment 1, further including the following steps:
a1: the particle suspended matters in the water body are naturally precipitated in the river channel, and the large particle suspended matters are precipitated; however, other particle suspended matters enter the multi-stage cyclone particle suspended matter discharge device along with the water body and flow through the S-shaped cyclone sedimentation channel 1;
a2: when sewage (namely water body containing particle suspended matters such as impurity rock gravel, silt and the like) flows through the S-shaped cyclone sedimentation channel 1, the sewage firstly passes through an upstream baffling point, and a dense porous isolation plate 4 at the upstream baffling point performs a blocking effect to gradually deposit part of the particle suspended matters such as the rock gravel, the silt and the like to the bottom of the tail end of the baffling point, and the particle suspended matters are deposited into a cyclone slag collecting groove 3 at the upstream baffling point;
a3: after the step A2, the particle suspended matters in the sewage are relatively reduced, the sewage is continuously left to a downstream baffling point, and the dense porous isolating plate 4 performs blocking action to gradually reduce the impact speed of partial particle suspended matters such as residual rock gravel, mud sand and the like at the tail end of the cyclone slag collecting groove 3 at the position and deposit the partial particle suspended matters at the bottom;
when the particle suspended matters in the cyclone slag collecting tank 3 are gradually increased to a certain quantity and height, the sensor 5 transmits signals to the automatic slag discharging pump, and the automatic slag discharging pump starts to work to quantitatively discharge the particle suspended matters deposited in the cyclone slag collecting tank.
The terms "upper," "lower," "outboard," "inboard," and the like in the description and in the claims of the invention and in the above figures, if any, are used for distinguishing between relative relationships in position and not necessarily for giving qualitative sense. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (3)
1. The multistage cyclone particle suspended matter discharge device is characterized by comprising a plurality of S-shaped cyclone sedimentation channels which are arranged continuously, wherein each S-shaped cyclone sedimentation channel is provided with two folding points, namely an upstream folding point and a downstream folding point, a cyclone slag collecting tank is arranged at each folding point, dense porous isolating plates are arranged at the communication parts of each folding point and each cyclone slag collecting tank, and an automatic slag discharge device is arranged in each cyclone slag collecting tank; the automatic slag discharging device comprises a sensor, a slag discharging pipe and a power device, wherein the sensor is arranged on the rotational flow slag collecting tank, the slag discharging pipe is connected to the rotational flow slag collecting tank, the slag discharging pipe is communicated with the rotational flow slag collecting tank, and the power device is arranged on the slag discharging pipe; the dense porous isolation plates are obliquely arranged, the dense porous isolation plates are provided with inclined parts, the dense porous isolation plates are provided with a plurality of holes, the hole diameter of the holes in the dense porous isolation plates at the upstream baffling points is larger than that of the holes in the dense porous isolation plates at the downstream baffling points, the dense porous isolation plates further comprise a filter tank, the S-shaped cyclone sedimentation channels positioned at the downstream are communicated with the filter tank, the power device is an automatic slag discharge pump, and the slag discharge pipe is connected to the bottom of the cyclone slag collecting tank.
2. A multi-stage cyclone particle suspension removal process comprising the multi-stage cyclone particle suspension removal apparatus of claim 1, further comprising the steps of:
a1: the particle suspended matters in the water body are naturally precipitated in the river channel, the large particle suspended matters are precipitated, and other particle suspended matters enter a multi-stage cyclone particle suspended matter discharging device along with the water body and flow through the S-shaped cyclone sedimentation channel;
a2: when sewage flows through the S-shaped cyclone sedimentation channel, the sewage firstly passes through an upstream baffling point, and the dense porous isolating plate at the upstream baffling point performs blocking action to gradually deposit partial particle suspended matters such as gravel, silt and the like to the bottom of the tail end of the baffling point, and the partial particle suspended matters are deposited into the cyclone slag collecting groove at the upstream baffling point;
a3: after the step A2, the particle suspended matters in the sewage are relatively reduced, the sewage is continuously left to the downstream baffling point, and the dense porous isolating plate at the position performs blocking action to gradually reduce the impact speed of the residual particle suspended matters such as gravels, silt and the like at the tail end of the rotational flow slag collecting groove at the position and deposit the residual particle suspended matters at the bottom.
3. The multi-stage cyclone particulate suspension removal process of claim 2, wherein the automatic slag removal means is operated to quantitatively remove the particulate suspension deposited therein when the particulate suspension in the cyclone slag collection bath is gradually increased to a predetermined amount and height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210015447.0A CN114405078B (en) | 2022-01-07 | 2022-01-07 | Multistage rotational flow particle suspended matter discharge device and process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210015447.0A CN114405078B (en) | 2022-01-07 | 2022-01-07 | Multistage rotational flow particle suspended matter discharge device and process thereof |
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| Publication Number | Publication Date |
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| CN114405078A CN114405078A (en) | 2022-04-29 |
| CN114405078B true CN114405078B (en) | 2024-03-22 |
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| CN202210015447.0A Active CN114405078B (en) | 2022-01-07 | 2022-01-07 | Multistage rotational flow particle suspended matter discharge device and process thereof |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105169765A (en) * | 2015-10-20 | 2015-12-23 | 重庆交通大学 | Water inlet unit structure of micro-irrigation system |
| CN105735203A (en) * | 2016-05-04 | 2016-07-06 | 安徽理工大学 | Desilting canal |
| CN107254863A (en) * | 2017-08-02 | 2017-10-17 | 安徽理工大学 | Joint sand discharge channel |
| CN109403264A (en) * | 2018-11-13 | 2019-03-01 | 北京市北运河管理处 | Rivers and canals enter the method that river mouth sewage treatment facility setting pot uses artificial bend to choke water |
| CN110478978A (en) * | 2019-09-12 | 2019-11-22 | 济南大学 | It is a kind of round from sand draining type gravity desilting filtering ponds |
| CN213680062U (en) * | 2020-09-15 | 2021-07-13 | 简阳希望创美环保有限公司 | Urban domestic sewage filters sand setting system |
| CN214019368U (en) * | 2020-09-17 | 2021-08-24 | 芜湖铭源污水处理有限公司 | Cyclone grit chamber convenient for sedimentation separation |
-
2022
- 2022-01-07 CN CN202210015447.0A patent/CN114405078B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105169765A (en) * | 2015-10-20 | 2015-12-23 | 重庆交通大学 | Water inlet unit structure of micro-irrigation system |
| CN105735203A (en) * | 2016-05-04 | 2016-07-06 | 安徽理工大学 | Desilting canal |
| CN107254863A (en) * | 2017-08-02 | 2017-10-17 | 安徽理工大学 | Joint sand discharge channel |
| CN109403264A (en) * | 2018-11-13 | 2019-03-01 | 北京市北运河管理处 | Rivers and canals enter the method that river mouth sewage treatment facility setting pot uses artificial bend to choke water |
| CN110478978A (en) * | 2019-09-12 | 2019-11-22 | 济南大学 | It is a kind of round from sand draining type gravity desilting filtering ponds |
| CN213680062U (en) * | 2020-09-15 | 2021-07-13 | 简阳希望创美环保有限公司 | Urban domestic sewage filters sand setting system |
| CN214019368U (en) * | 2020-09-17 | 2021-08-24 | 芜湖铭源污水处理有限公司 | Cyclone grit chamber convenient for sedimentation separation |
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| Publication number | Publication date |
|---|---|
| CN114405078A (en) | 2022-04-29 |
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